WESTERN DIGITAL
           "PLUS"-FAMILY LAN ADAPTER BOARD DRIVER FOR USE WITH 
                 3COM'S 3+ NETWORK OPERATING SYSTEM

			INSTALLATION GUIDE
			 December 3, 1990


This driver supports all WD8003-Family LAN Adapters:
	StarCard PLUS          	StarLink PLUS
	StarCard PLUS/A         EtherCard PLUS
	EtherCard PLUS TP       EtherCard PLUS with Boot ROM
	EtherCard PLUS/A        EtherCard PLUS16
	EtherCard PLUS 10T/A

This document contains the information necessary to install a
Western Digital WD8003-family LAN adapter board and driver in
3Com's 3+ network.

1. Jumper the adapter according to your system configuration.

   The WD.SYS Device Driver is installed at PC boot time according to
   the command line specified in the DOS CONFIG.SYS file (described
   below).  The jumper settings on the adapter board must correspond
   to the software settings given on the device driver command line.

   Jumper settings for some of the adapter boards are described in the
   JUMPERS.DOC file resident on the diskette supplied with the adapter
   board.  For more information, refer to the Western Digital "User
   Installation Guide" that comes with each adapter board.

2. Insert the adapter in the PC.

3. Power up the PC.

4. Install the 3Com 3+ network software as specified in the 3Com
   Installation and Configuration Guide.

5. After the installation is complete, copy the Western Digital driver
   WD.SYS from this diskette to the root directory of your system drive
   with a new name called ETH.SYS.  For example:

                 CD A:\3PLUS
                 COPY A:WD.SYS C:\ETH.SYS (XT/AT bus)
                               C:\ETH523.SYS (Micro Channel)

   If 3+NetConnect has been installed and the Western Digital board
   is being used as a remote (secondary) network adapter, a secondary
   driver (2WD.SYS) is used.  If necessary, copy that secondary
   driver to the root directory.  For example:

                 COPY A:2WD.SYS C:\2ETH.SYS (XT/AT bus)
                                C:\2ETH523.SYS (Micro Channel)

6. If the LAN adapter board's default parameters were changed in step
   1, it will be necessary to modify the DEVICE=[2]ETH.SYS command line
   in the CONFIG.SYS file to reflect the jumper selections of step 1.
   Use the format:

                 DEVICE=ETH.SYS IRQ base page  (XT/AT bus)
    	         DEVICE=2ETH.SYS IRQ base page (XT/AT bus)
		   
		 DEVICE=ETH523.SYS IRQ base page  (Micro Channel)
		 DEVICE=2ETH523.SYS IRQ base page (Micro Channel)

   IRQ, base and page are defined as follows:

   IRQ  - IRQ level to receive adapter board interrupts  (3 dec.)

   base - I/O base address                               (280 hex.)

   page - 4-digit memory segment byte address of the
          8 Kbyte shared buffer memory (not jumpered
          on the board)                                  (D000 hex.)

   The factory jumper settings for the WD8003-family adapter boards and
   the WD.SYS default buffer memory base address are given in parentheses.

   If these default values conflict with other adapter boards installed
   in your system, you may need to change the values used by the LAN
   adapter.  For example, to change the IRQ level to 4 and the buffer
   memory base address to D4000H (segment address D400H), before
   rebooting the system change the line,

             "DEVICE=ETH.SYS"
                   to
             "DEVICE=ETH.SYS 4 280 D400"

NOTE:  There are a number of PC boards that can conflict with various
       possible shared memory addresses.  For example, the VGA and EGA
       graphics adapters seem to use the area of memory in the range of
       C000H through D400H, depending on the type of adapter.  It has
       been found that D000H is a good address for users of EGA adapters
       and  D400H or DE00H work well for systems with the VGA adapters.
       If you are experiencing any problems getting the system to
       function, try moving the shared memory base address.

7. Reboot the system.

   For Micro Channel bus systems:

   1. Configure the EtherCard PLUS/A or StarCard PLUS/A using the
      .ADF file supplied on the SuperDisk with your adapter card.
      Use either the manual or automatic configuration routines,
      ensuring that the settings do not conflict with other devices
      in the system.

   2. Continue the installation process using steps 2 through 7
      above.


(*) 3Com and 3+ are registered trademarks and 3+NetConnect is a
trademark of 3Com Corporation.  Micro Channel is a registered
trademark of International Business Machines Corporation.

EtherCard PLUS, StarCard PLUS, and StarLink PLUS are trademarks
of Western Digital Corporation.